I've taken a list of English words, and examined each of them to see what they sound like (using the PHP metaphone function). This page lists the most common metaphone codes, along with their words. You can also search for a word of your own, and see which words sound similar - and which ones rhyme, and which ones alliterate.
catenas cadenza codeinas cuteness cattiness codens cotans cutins kittens cadency ketenes cadence cottons codeins codeines quietens cutaneous coetaneous codons ketones
catenas tens fattens heightens codeinas ketenes kittens lateens etnas neatens luteins patinas poteens ratteens retenes sateens stenos wheatens latinas butenes battens mittens tense tenias teens taenias duennas quietens tunas lattens latens patens pattens potteens rattens retinas steins tautens whitens